#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#include "lcode.h"

#include "unity.h"

void setUp(void) {
    // Set up test environment
}

void tearDown(void) {
    // Clean up test environment
}

void test_tonumeral(void) {
    expdesc e;
    TValue v;

    // Test VKINT case
    e.k = VKINT;
    e.u.ival = 42;
    TEST_ASSERT_EQUAL(1, tonumeral(&e, &v));
    TEST_ASSERT_EQUAL(42, ivalue(&v));

    // Test VKFLT case
    e.k = VKFLT;
    e.u.nval = 3.14;
    TEST_ASSERT_EQUAL(1, tonumeral(&e, &v));
    TEST_ASSERT_EQUAL_FLOAT(3.14, fltvalue(&v));

    // Test non-numeral case
    e.k = VVOID;
    TEST_ASSERT_EQUAL(0, tonumeral(&e, &v));
}

void test_luaK_nil(void) {
    FuncState fs;
    Instruction previous;

    // Test optimization case
    fs.pc = 1;
    fs.lasttarget = 0;
    fs.f = (Proto *)malloc(sizeof(Proto));
    fs.f->code = (Instruction *)malloc(sizeof(Instruction));
    fs.f->code[0] = CREATE_ABC(OP_LOADNIL, 1, 2, 0);
    luaK_nil(&fs, 2, 3);
    TEST_ASSERT_EQUAL(1, fs.pc); // No new instruction added
    TEST_ASSERT_EQUAL(1, GETARG_A(fs.f->code[0])); // From adjusted
    TEST_ASSERT_EQUAL(4, GETARG_B(fs.f->code[0])); // To adjusted

    // Test non-optimization case
    fs.pc = 1;
    fs.lasttarget = 1;
    luaK_nil(&fs, 2, 3);
    TEST_ASSERT_EQUAL(2, fs.pc); // New instruction added
    TEST_ASSERT_EQUAL(2, GETARG_A(fs.f->code[1]));
    TEST_ASSERT_EQUAL(2, GETARG_B(fs.f->code[1]));

    free(fs.f->code);
    free(fs.f);
}

void test_luaK_concat(void) {
    FuncState fs;
    int l1 = NO_JUMP;
    int l2 = 10;

    // Test empty l1 case
    luaK_concat(&fs, &l1, l2);
    TEST_ASSERT_EQUAL(10, l1);

    // Test non-empty l1 case
    l1 = 5;
    luaK_concat(&fs, &l1, l2);
    TEST_ASSERT_EQUAL(5, l1); // Should be unchanged until getjump is implemented
}

int main(void) {
    UNITY_BEGIN();
    RUN_TEST(test_tonumeral);
    RUN_TEST(test_luaK_nil);
    RUN_TEST(test_luaK_concat);
    return UNITY_END();
}